JFinal 源码导读第五天(1) initOreillyCos,initTokenManager

1.initActiveRecord();  很简单就是常量的赋值

ActiveRecordPlugin.setDevMode(constants.getDevMode());

2.initOreillyCos();就是一个上传组件 初始化代码很简单,看看就明白

private void initOreillyCos() {
		Constants ct = constants;
		if (OreillyCos.isMultipartSupported()) {
			String uploadedFileSaveDirectory = ct.getUploadedFileSaveDirectory();
			if (uploadedFileSaveDirectory == null || "".equals(uploadedFileSaveDirectory.trim())) {
				uploadedFileSaveDirectory = PathKit.getWebRootPath() + File.separator + "upload" + File.separator;
				ct.setUploadedFileSaveDirectory(uploadedFileSaveDirectory);
				
				/*File file = new File(uploadedFileSaveDirectory);
				if (!file.exists())
					file.mkdirs();*/
			}
			OreillyCos.init(uploadedFileSaveDirectory, ct.getMaxPostSize(), ct.getEncoding());
		}
	}

3.OreillyCos.isMultipartSupported() 代码也很简单,我直接贴上代码

/**
 * OreillyCos.
 */
public class OreillyCos {
	
	private static Boolean isMultipartSupported = null;
	
	public static boolean isMultipartSupported() {
		if (isMultipartSupported == null) {
			detectOreillyCos();
		}
		return isMultipartSupported;
	}
	
	public static void init(String saveDirectory, int maxPostSize, String encoding) {
		if (isMultipartSupported()) {
			MultipartRequest.init(saveDirectory, maxPostSize, encoding);
		}
	}
	
	private static void detectOreillyCos() {
		try {
			Class.forName("com.oreilly.servlet.MultipartRequest");
			isMultipartSupported = true;
		} catch (ClassNotFoundException e) {
			isMultipartSupported = false;
		}
	}
}

4uploadedFileSaveDirectory = PathKit.getWebRootPath() + File.separator + "upload" + File.separator;
我就介绍一下 PathKit.getWebRootPath()这段代码,其实就是前面我们第一个initPathUtil() 的初始化的值
5initI18n();就是初始化国际化,很简单代码

private void initI18n() {
		String i18nResourceBaseName = constants.getI18nResourceBaseName();
		if (i18nResourceBaseName != null) {
			I18N.init(i18nResourceBaseName, constants.getI18nDefaultLocale(), constants.getI18nMaxAgeOfCookie());
		}
	}

6.initTokenManager(); 防止重复提交
我介绍一下TokenManager.init(tokenCache);里面的代码

public static void init(ITokenCache tokenCache) {
		if (tokenCache == null)
			return;
		
		TokenManager.tokenCache = tokenCache;
		
		long halfTimeOut = Const.MIN_SECONDS_OF_TOKEN_TIME_OUT * 1000 / 2;	
		new Timer().schedule(new TimerTask() {public void run() {removeTimeOutToken();}},
							 halfTimeOut,
							 halfTimeOut);
	}

private static void removeTimeOutToken() {
		List<Token> tokenInCache = tokenCache.getAll();
		if (tokenInCache == null)
			return;
		
		List<Token> timeOutTokens = new ArrayList<Token>();
		long currentTime = System.currentTimeMillis();
		// find and save all time out tokens
		for (Token token : tokenInCache)
			if (token.getExpirationTime() <=  currentTime)
				timeOutTokens.add(token);
		
		// remove all time out tokens
		for (Token token : timeOutTokens)
			tokenCache.remove(token);
	}